/*
 * Copyright 2004 - 2013 Wayne Grant
 *           2013 - 2024 Kai Kramer
 *
 * This file is part of KeyStore Explorer.
 *
 * KeyStore Explorer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KeyStore Explorer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KeyStore Explorer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kse.gui.dialogs.importexport;

import java.awt.BorderLayout;
import java.awt.Dialog;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ResourceBundle;

import javax.swing.AbstractAction;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.KeyStroke;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.EtchedBorder;

import org.kse.gui.components.JEscDialog;
import org.kse.gui.PlatformUtil;

/**
 * Dialog used to request the type of key pair import.
 */
public class DImportKeyPairType extends JEscDialog {
    private static final long serialVersionUID = 1L;

    private static ResourceBundle res = ResourceBundle.getBundle("org/kse/gui/dialogs/importexport/resources");

    private static final String CANCEL_KEY = "CANCEL_KEY";

    private JPanel jpImportType;
    private JLabel jlImportType;
    private JRadioButton jrbPkcs12;
    private JRadioButton jrbPkcs8;
    private JRadioButton jrbPvk;
    private JRadioButton jrbOpenSsl;
    private JPanel jpButtons;
    private JButton jbOK;
    private JButton jbCancel;

    private boolean importTypeSelected = false;

    /**
     * Creates a new DImportKeyPairType dialog.
     *
     * @param parent The parent frame
     */
    public DImportKeyPairType(JFrame parent) {
        super(parent, Dialog.ModalityType.DOCUMENT_MODAL);
        setTitle(res.getString("DImportKeyPairType.Title"));
        initComponents();
    }

    private void initComponents() {
        jlImportType = new JLabel(res.getString("DImportKeyPairType.jlImportType.text"));

        jrbPkcs12 = new JRadioButton(res.getString("DImportKeyPairType.jrbPkcs12.text"), true);
        PlatformUtil.setMnemonic(jrbPkcs12, res.getString("DImportKeyPairType.jrbPkcs12.mnemonic").charAt(0));
        jrbPkcs12.setToolTipText(res.getString("DImportKeyPairType.jrbPkcs12.tooltip"));

        jrbPkcs8 = new JRadioButton(res.getString("DImportKeyPairType.jrbPkcs8.text"));
        PlatformUtil.setMnemonic(jrbPkcs8, res.getString("DImportKeyPairType.jrbPkcs8.mnemonic").charAt(0));
        jrbPkcs8.setToolTipText(res.getString("DImportKeyPairType.jrbPkcs8.tooltip"));

        jrbPvk = new JRadioButton(res.getString("DImportKeyPairType.jrbPvk.text"));
        PlatformUtil.setMnemonic(jrbPvk, res.getString("DImportKeyPairType.jrbPvk.mnemonic").charAt(0));
        jrbPvk.setToolTipText(res.getString("DImportKeyPairType.jrbPvk.tooltip"));

        jrbOpenSsl = new JRadioButton(res.getString("DImportKeyPairType.jrbOpenSsl.text"));
        PlatformUtil.setMnemonic(jrbOpenSsl, res.getString("DImportKeyPairType.jrbOpenSsl.mnemonic").charAt(0));
        jrbOpenSsl.setToolTipText(res.getString("DImportKeyPairType.jrbOpenSsl.tooltip"));

        ButtonGroup keyStoreTypes = new ButtonGroup();

        keyStoreTypes.add(jrbPkcs12);
        keyStoreTypes.add(jrbPkcs8);
        keyStoreTypes.add(jrbPvk);
        keyStoreTypes.add(jrbOpenSsl);

        jpImportType = new JPanel(new GridLayout(5, 1));
        jpImportType.setBorder(new CompoundBorder(new EmptyBorder(5, 5, 5, 5),
                                                  new CompoundBorder(new EtchedBorder(), new EmptyBorder(5, 5, 5, 5))));

        jpImportType.add(jlImportType);
        jpImportType.add(jrbPkcs12);
        jpImportType.add(jrbPkcs8);
        jpImportType.add(jrbPvk);
        jpImportType.add(jrbOpenSsl);

        jbOK = new JButton(res.getString("DImportKeyPairType.jbOK.text"));
        jbOK.addActionListener(evt -> okPressed());

        jbCancel = new JButton(res.getString("DImportKeyPairType.jbCancel.text"));
        jbCancel.addActionListener(evt -> cancelPressed());
        jbCancel.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW)
                .put(KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), CANCEL_KEY);
        jbCancel.getActionMap().put(CANCEL_KEY, new AbstractAction() {
            private static final long serialVersionUID = 1L;

            @Override
            public void actionPerformed(ActionEvent evt) {
                cancelPressed();
            }
        });

        jpButtons = PlatformUtil.createDialogButtonPanel(jbOK, jbCancel);

        getContentPane().setLayout(new BorderLayout());
        getContentPane().add(jpImportType, BorderLayout.CENTER);
        getContentPane().add(jpButtons, BorderLayout.SOUTH);

        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent evt) {
                closeDialog();
            }
        });

        setResizable(false);

        getRootPane().setDefaultButton(jbOK);

        pack();
    }

    /**
     * Has an import type been selected?
     *
     * @return True if it has, false otherwise
     */
    public boolean importTypeSelected() {
        return importTypeSelected;
    }

    /**
     * Has the user chosen to import from a PKCS #12 file?
     *
     * @return True if they have, false otherwise
     */
    public boolean importPkcs12() {
        return jrbPkcs12.isSelected();
    }

    /**
     * Has the user chosen to import from PKCS #8 private key and certificate
     * file combination?
     *
     * @return True if they have, false otherwise
     */
    public boolean importPkcs8() {
        return jrbPkcs8.isSelected();
    }

    /**
     * Has the user chosen to import from PVK private key and certificate file
     * combination?
     *
     * @return True if they have, false otherwise
     */
    public boolean importPvk() {
        return jrbPvk.isSelected();
    }

    /**
     * Has the user chosen to import from OpenSSL private key and certificate
     * file combination?
     *
     * @return True if they have, false otherwise
     */
    public boolean importOpenSsl() {
        return jrbOpenSsl.isSelected();
    }

    private void okPressed() {
        importTypeSelected = true;

        closeDialog();
    }

    private void cancelPressed() {
        closeDialog();
    }

    private void closeDialog() {
        setVisible(false);
        dispose();
    }
}
